Re: [HPDD-discuss] [PATCH] staging: lustre: ptlrpc: add missing include directive

From: Drokin, Oleg
Date: Sat Aug 15 2015 - 06:11:17 EST


On Aug 15, 2015, at 4:13 AM, Ioan-Adrian Ratiu wrote:

>>> Without including ptlrpc_internal.h, GCC gives prototype warnings
>>> "pack_generic.c:642:5: warning: no previous prototype for ..."
>> It does? What version of gcc give you that, I don't see that here.
> Yes, but it's a non-default warning (-Wmissing-prototypes)
> $ gcc --version
> gcc (Gentoo 4.9.3 p1.0, pie-0.6.2) 4.9.3
> When testing the above patch I've used Ubuntu Vivid Vervet's gcc
> (also 4.9 I think, I don't have access to that machine right now).
> To see the warn I'm adding "ccflags-y := -Wmissing-prototypes"
> to a Makefile then "make SUBDIRS=…"

Duh, so essentially it tells you that you have a non-static function
that lacks a previously defined prototype, but because it's
non-static, it's likely used elsewhere and the prototype might get
out of sync with the actual function definition?

I guess it's no big deal to include the ptlrpc_internal.h there
to catch potential problems like that.


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